21687824

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1087}}^1$

素因数の和:1167

約数の個数: 40

約数和(自身を含む): 44520960

約数和(自身を除く): 22833136

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 1087, 1247, 2174, 2494, 4348, 4988, 8696, 9976, 17392, 19952, 31523, 46741, 63046, 93482, 126092, 186964, 252184, 373928, 504368, 747856, 1355489, 2710978, 5421956, 10843912, 21687824]

約数ペア:

[(1, 21687824), (2, 10843912), (4, 5421956), (8, 2710978), (16, 1355489), (29, 747856), (43, 504368), (58, 373928), (86, 252184), (116, 186964), (172, 126092), (232, 93482), (344, 63046), (464, 46741), (688, 31523), (1087, 19952), (1247, 17392), (2174, 9976), (2494, 8696), (4348, 4988)]